The Washer,flat, cataloged under National Stock Number 5310-00-209-4072, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Ge Aviation Systems Llc Dba Ge Aviation Systems Llc. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-209-4072 |
| Primary Part Number | CYRD266 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Ge Aviation Systems Llc Dba Ge Aviation Systems Llc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES BOTTOM |
| Overall Diameter | 0.281 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Features Provided | CASEHARDENED |
| Surface Treatment | OXIDE FILM OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.1675 INCHES MINIMUM AND 0.1695 INCHES MAXIMUM IN |
| Thickness | 0.030 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| CYRD266 PRIMARY | Ge Aviation Systems Llc Dba Ge Aviation Systems Llc (USA) |
NSN 5310-00-209-4072 is a Washer,flat, manufactured by Ge Aviation Systems Llc Dba Ge Aviation Systems Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-209-4072 has 1 manufacturer part number on file: CYRD266 (Ge Aviation Systems Llc Dba Ge Aviation Systems Llc).
Key specifications for CYRD266: Surface Finish: 32.0 MICROINCHES BOTTOM; Overall Diameter: 0.281 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Features Provided: CASEHARDENED. 10 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.